上三角矩阵

On the basis of the method of separating variables of sucker rod wave equation,in combination the matrix recursion technology with trigonometric series recursion technology,a kind of quick arithmetic of pump dynamograph in failure diagnosis technology of sucker rod pumping system is proposed.

在抽油杆柱波动方程分离变量法的基础上，将矩阵递推技术与三角级数递推技术相结合，提出了有杆抽油系统故障诊断技术中计算泵功图的一种快速算法，这种方法不仅适用于单级抽油杆采油系统，同时也适用于不同材质、不同杆径抽油杆组成的抽油系统。

In tiffs paper, inspired from the position-numeral description in computer, the step s expression of the search algorithm was gained through reasonable conversion of some interrelated rules, Based on inheriting the advantages of traditional Hill Climbing, a new way to search the kinematic inverse solution of multi-joint robot -intelligent hill climbing, was put forward.

本文从计算机原理中位置数制的描述获得启发，将其中的某些规律进行合理的转换，形成搜索算法的步长表达式；在吸收传统登山优点的基础上，提出了求取多关节机械臂运动学逆解的新算法——智能登山法，并对算法进行了描述，写出了完整的通用流程图，运用该方法求取机器人运动学逆解，无需矩阵运算、三角变换；收敛速度快，适于实时控制，仿真试验验证了该方法的可行性、实用性。

Based on [1] and [2], a new approach to the stability of those systems whose state matrices are grey and symmetric, grey triangular and grey comb-shaped is presented. White mapping and relevant theore are also discussed.

在文献[1]、[2]的基础上，重新论述了状态矩阵为灰色实对称、灰色三角和灰色梳形系统的稳定问题；并以位移算子为基础，论述了白色映射及有关定理。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。